Quarterly report pursuant to Section 13 or 15(d)

Goodwill (Details)

v3.7.0.1
Goodwill (Details)
CAD in Millions, $ in Millions
3 Months Ended 12 Months Ended
May 31, 2017
USD ($)
Feb. 28, 2017
USD ($)
Dec. 16, 2016
USD ($)
Dec. 16, 2016
CAD
Changes in the carrying amount of goodwill [Roll Forward]        
Goodwill, beginning of period $ 7,920.5 $ 7,138.6    
Purchase accounting allocations 7.6 884.5    
Canadian Divestiture   (126.1)    
Foreign currency translation adjustments 44.2 23.5    
Goodwill, end of period 7,972.3 7,920.5    
Operating Segments [Member] | Beer [Member]        
Changes in the carrying amount of goodwill [Roll Forward]        
Goodwill, beginning of period 5,053.0 4,530.1    
Purchase accounting allocations 7.8 510.8    
Canadian Divestiture   0.0    
Foreign currency translation adjustments 45.6 12.1    
Goodwill, end of period 5,106.4 5,053.0    
Operating Segments [Member] | Wine and Spirits [Member]        
Changes in the carrying amount of goodwill [Roll Forward]        
Goodwill, beginning of period 2,867.5 2,608.5    
Purchase accounting allocations (0.2) 373.7    
Canadian Divestiture   (126.1)    
Foreign currency translation adjustments (1.4) 11.4    
Goodwill, end of period $ 2,865.9 $ 2,867.5    
Accumulated impairment losses     $ 216.8 CAD 289.1